A 2 L bottle is full of water. The bottle leaks 80 mL of water every three minutes. With the bottle be empty in one hour?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Aline passes through 3,7 and 6,9 what equation represents the line

Math it's appreciated. (picture provided)